package com.yixiu.study.juc.taobao.num2;

import java.util.LinkedList;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * @CalssName T01_ThreadNotify
 * @Description
 * @Author yixiu
 * @Date 2021/6/25 10:50
 * @Verison 1.0
 **/
public class T01_ThreadNotify<T> {
    final private LinkedList<T> lists = new LinkedList<>();
    //最多10个元素
    final private int MAX = 10;
    private int count =0;
    private Lock lock = new ReentrantLock();
    private Condition producer = lock.newCondition();
    private Condition consumer = lock.newCondition();

    public void put(T t){
        try {
            lock.lock();
            while (lists.size() == MAX) {
                producer.await();
            }

            lists.add(t);
            ++count;
            consumer.signalAll();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
    }

    public T get(){
        T t= null;
        try {
            lock.lock();
            while (lists.size() == 0){
                consumer.await();
            }
            t = lists.removeFirst();
            count --;
            producer.signalAll();

        } catch (InterruptedException e){
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
        return t;
    }


    public static void main(String[] args) {
        T01_ThreadNotify<String> c = new T01_ThreadNotify<>();
        //启动消费者线程
        for (int i = 0; i < 10; i++) {
            new Thread(() -> {
                for (int j = 0; j < 5; j++) {
                    System.out.println(c.get());
                }
            }, "c" + i).start();
        }

        try {
            TimeUnit.SECONDS.sleep(2);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        //启动生产者线程
        for (int i = 0; i < 2; i++) {
            new Thread(() -> {
                for (int j = 0; j < 25; j++) {
                    c.put(Thread.currentThread().getName() + "" + j);
                }
            }, "p" + i + "-").start();
        }

    }


}
